Unformatted text preview: arrangement for getting
vessels out of the water so that bottom work can
be done. Usually a slip is dug in the shore, a
vessel is floated in, a wall is placed across the
open end of the slip and the water is pumped out
of the 'tank'. Often used for very heavy objects.
Grommet ----A soft ring used under a nut or
bolt head to maintain water tightness.
Ground Ways ----Timbers secured to the
ground, under the hull on each side of the keel,
on which a ship is launched.
Gudgeons ----Bosses on stern post drilled for
pins (Pintles) on which rudder swings.
Gunwale ----The junction of deck and shell at
top of sheer strake.
Gunwale Bar ----Angle iron which connects
stringer plate and shell plates. (Riveted work) H
Hatch ----An opening in a deck for passage of
Hatch Battens ----Flat bars which are wedged
against hatch coamings to secure tarpaulins.
Hatch Beam ----A portable beam used to
support wooden hatch covers.
Hawse Pipe ----Casting, or castings, through
deck and side of ship at bow for passage of
Hawser ----A large rope used in towing or
Headlog ----The bow plate on a vessel that is
made of thick steel plate.
Heeling ----The inclination of a vessel to one
Hogging ----Straining of the ship which tends to
make the bow and stern lower than the middle
Hold ----The inside of a hull; cargo space.
Hold Beams ----Structural members placed in a
hold, similar to deck beams, but having no
plating or planking on them.
Holder-On ----One who "backs up" or "holds
on" the head of a rivet while the point is being
"driven", or upset.
Horn ----To line or square-up; also, part of a
Hull ----The body of a ship, including shell
plating, framing, decks, bulkheads. Gyro-Compass ----A mechanical compass
operated by means of a gyroscope. This compass
indicated true north rather than magnetic north.
Gyro-Repeater ----An apparatus to show the
reading of the gyro compass at a distance from
the main gyroscope equipment. I
I-Beam ----A structural shape with cross section
resembling the letter I.
Inboard ----Inside the ship; toward or nearer the
center line. E6002 – Ship Terms & Definitions p. 12 © C.G.Daley Inboard Profile ----A drawing of the
longitudinal section at center line of ship.
Inert Gas ----A gas such as carbon dioxide or
nitrogen that is used to make an oxygen
deficient atmosphere. Inerted tanks are useful for
preserving cargo integrity and reducing the
explosive potential of cargo tanks.
Inerted ----Implies that a tank is filled with an
Innage ---- A measurement of liquid cargo in a
tank. It is the distance from the top of the cargo
to the bottom of the tank. It is the opposite of
Inner Bottom ----Plating forming the upper
surface of the double bottom. Also called tank
Inner Shell ----A plated surface or "shell" inside
the outer shell plating, used as additional
protection in case of collision or other accidents.
The space between the inner and outer shells is
often used as a storage space for liquid ballast or
Keel ----The principal fore and aft member of a
ship's frame. The keel runs along the bottom,
connecting the stem and stern, and to it are
attached the frames of the ship.
Keel-blocks ----Heavy blocks which support the
keel of the ship during construction.
Keel, Flat ----The bottom shell strake on
centerline of ship.
Keelson, Side ----Fore and aft member placed
on either side of, and similar to, the vertical keel.
Keel, Vertical ----Vertical plate used as
reinforcement for keel, often called centerkeelson.
Kevel ----A deck fitting used to secure a line or
a cable to a vessel Inserted Packing Red lead ----soaked canvas
strips placed between connections that cannot be
caulked successfully; stop waters.
Intercostal ----Made in separate parts; between
frames, beams, etc., the opposite of continuous.
(Floors are continuous; longitudinal girders are
intercostal in most cargo vessels.)
Isherwood System ----A system of building
ships in which the main framing is longitudinal
or fore and aft, instead of transverse as in
ordinary ships. J
Jack Staff ----A flag staff at the bow of a ship.
Jetsam ----Items that are thrown overboard from
a vessel in distress. Discarded cargo that washes
Joggle ----An abrupt bend or offset in a plate,
bar, or frame to eliminate the use of liners. Kevel
King Post ----A stub mast, outboard from center
line, used to carry cargo booms; kingposts also
serve as ventilators.
Knot ----A tie in a line (for instance a square
knot). A nautical mile. (About one and oneseventh statute miles.)
Knuckle Plate ----A plate bent to form a
knuckle. A nuckle is a rounded corner usually
found on the bottom of a vessel. It is believed
that if a vessel contacts the river bank, a vessel
with rounded 'nuckle' plates can be dislodged
easier than one that has sharp corners. E6002 – Ship Terms & Definitions p. 13 © C.G.Daley Launching ----The operation of placing a hull in
the water by allowing it...
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- Winter '14